Coin de Mire, a striking islet off Mauritius, is renowned for its excellent snorkeling and diving opportunities, showcasing rich marine life and nesting seabirds, though landing on the island itself is restricted as it's a nature reserve. Accessibility is solely by guided boat tours, typically departing from northern towns like Grand Baie or Cap Malheureux, often bundled with visits to nearby islands like Île Plate. Tours are not suitable for solo unguided exploration due to the necessity of boat transport. The best time to visit for water activities is generally September to May, avoiding the windier winter months or potential cyclone season (November-April). A typical half-day to full-day excursion, including transfers and often lunch, can cost approximately €50-€150+ per person, with around 1-2 hours spent around the islet. Essential items include sun protection and potentially motion sickness remedies for boat travel.